Wanted to start a thread to give a shout out to Dave at hamilton lighting. I decided to give there new 20k 150 watt DE bulbs a try and they look amazing. Corals have responded well to them in the past 2 days and the color is really impressive. A very nice blue color, great fluorescence in corals and the brightest 20k bulb I've ever owned. Hamilton hit a home run with this bulb in my opinion and I wish I went with them sooner. Thanks again to dave at hamilton lighting.